Lard-cooler



(No Model.)

0. G. BURNHAM.

LARD COOLER.

No. 287,362. Patented 001;. 28, 1883.

wiwi.;

UNITE STATES oLIi'IERv c. 'BURNIIML or cIIIoAco, ILLINOIS. I

LABO-COOLER.

SPECIFICATION forming` part of Letters Patent No. 287,862, dated October 23,1883.

Application filed November 20, 1892. (No modul.)

To allan/71,0711, t may concern,.-

Be it known that I, OLIvEaG. BURNHAM, of Chicago, in the county of Cool( and State of Illinois, have invented certain new and useful Improvements in Lard-Coolers; and I do hereby declare th at the followin gis a full, clear, and exact description of the invention,rrefer ence being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

This invention relates to improvements in f apparatus for cooling lard and similar substances; and it consists in the several matters hereinafter set forth, and pointed out in the appended claims.

In the drawings, Figure l is a plan view, partly in horizontal section, of my improved apparatus. tion, and Fig. 3 is a detail in vertical section.

A represents a deep trouglrshaped vessel, having a semi-cylindrical bottom, and usually, but not necessarily, open at the top.

B 'is a hollow, preferably non-rotating, smooth-surfaced metal cylinder mounted in the trough A, concentrically with the curved bottom ofthe latter, by means of hollow central supporting-shafts b.

` volverl.

C C are hollow or tubular hubs surrounding the shafts b, and fitted in suitablebearings,D,

in the ends of the trough. Each hub C is providedlwith two lateral and oppositely-projecting arms, C, arranged to intervenebetween the ends of the cylinder" B and those of the trough A, as clearly seen by reference to Fig. l of the drawings. The ends of the arms C', at one end of the trough, are connected with those of the corresponding arms at the other end by bars C2, which they support in position parallel with the surface of the cylinder, and at a short distance therefrom. Said bars are provided withaseries of outwardly-projeeting pins, c c, whose free ends proximate the curved surface ofthe trough when the bars are re- From the inner surface. of the trough A, a corresponding series of pins, c a, project inwardly, being arranged in position to yallow those on the bars to pass between them.

To the bars C2, and preferably on their advanced edges, are hinged inclined metal scrapers C, whose free margins bear closely upon the surface of the cylinder B.I Said scrapers are held forcibly against the cylinder by means Fig. 2 is a vertical transverse sec other, and the scrapers are made in sections terminating at these braces. The Scrapers additionally support the bars C2 one from theY may, however, extend beneath these annulari braces, if desired.

At one or both ends of the machine the hub C extends beyond the bearing D in the trough A, and is provided with a pulley or gear wheel D, by which the arms C and bars C'l may be revolved about the cylinder B. In the present case but one hub is so extended through the head of the` trough or its bearing D, and at the opposite end the head or bearing is contracted over the outer extremity of the hub, and 'provided with a cap, D2, be-

-neath which a suitable packing may beinserted. Said cap may be made to s oclosely embrace the adjacent end of the shaft b of the cylinder as to hold the latter from rotation, or other means may be provided for this purpose. The cap D2 is tubular to form a continuous passage with the interior of shaft b,

and is provided with a screw-thread, so as to serve as a coupling for a hose or pipe for they admission or egress of water to or from the cylinder. The opposite shaft,b,of the cylinder extends beyond the hub C and connects with apipe or hose.

As here shown, two entirely similar apparatuscs are connected, the cylinders having communication by a pipe, B', and the trough in teriors by a pipe, a2.

In the operation of the machine acurrent of cold water is maintained through the cyl- Inder or cylinders B. 'Ihe lard or other substance to be cooled is supplied to the trough through the pipe c, and finds egress through the pipe c, whichis usually connected with a pump for the forcible withdrawal ofthe lard. The latter is cooled by contact with the surface of the cylinder. As fast as cooled itis scraped ICO f ture.

off and forced outward by the Scrapers G3, attached to the revolving bars C2, and its place is taken by that which is uncooled. The intercurrent pins a and c thoroughly mix the lard removed from the cylinder by the Scrapers with that exterior thereto, and the whole mass is rapidly and uniformly reduced in tempera- The agitation and mixing described also prevent the mass from granulating in the act of cooling.

Two machines constructed and connected as shown and properly operated are usually suiicient to promptly effect the cooling of a mass of lard or similar substance from the high temperature at which it leaves the rendering-tank to the desired temperature for packing in tierces; but one or any desired number, connected as shown, may be employed, and the speed with which the lard is carried through the mach ine or machines may be varied at the outlet, in accordance with the effect desired or produced. p

I claim as my invention 1. The combination, with an exterior troug and a central non-rotatin g hollowr cylinder provided with hollow shafts b, for the admission and discharge of Water, of a bar, C2, supported from and revolving about said shaft, a scraper attached to Said bar, and a series of intercurrent-pins Secured oppositely to the trough and to the said bar, substantially as described.

2. The combination 'of the trough A, having a Semi'cylindrical bottom, and provided with inwardly-proj ecting pins a, a central nonrotating holloW cyli11der,B, provided with hollow shafts b, for the admission and discharge of water, revolving arms Cf, one pair of which is connected with va hub, C, embracing the shaft b, and has bearing in the head of the trough, bars C2, secured to the arms C, and provided With outwardly-projecting pins c, Scrapers C3, attached to said bars, Springs arranged to bear the Scrapers upon the surface of the cylinder7 and means for revolving the arms C', attached to the projecting hub C, substantially as described.

In testimony that I claim the foregoing as my invention l aix my signature in presence of two Witnesses.

I OLIVER G. BURNHAM. VitnesseS:

DAYTON,

PETER J. ELLERT. 

